Thermal fuse protector

Abstract

The utility model discloses a thermosensitive fuse protector, which belongs to the technical field of fuse protection, and comprises a fuse body, the upper end of the fuse body is connected with a wire inlet terminal, one end, far away from the wire inlet terminal, of the fuse body is connected with a wire outlet terminal, and one end, far away from the fuse body, of the wire inlet terminal is connected with a disconnecting mechanism. One end, far away from the fuse body, of the wire outlet terminal is connected with an adapter, the adapter is hinged with a fuse wire assembly, one end, far away from the adapter, of the fuse wire assembly abuts against a disengaging mechanism, the disengaging mechanism comprises a contact plate connected to the wire inlet terminal, the upper end of the contact plate is provided with a placing groove, the front end of the contact plate is connected with a motor, and the output end of the motor is connected with a follow-up shaft. The peripheral side of the follow-up shaft is connected with a contact sleeve, the inner wall of the contact sleeve is connected with a main lap joint, and the outer side of the contact sleeve is provided with a temperature sensor. According to the utility model, the fuse wire which is overheated can be timely disconnected, and the loss of the device is prevented from being too large.

Description

Technical Field

[0001] The utility model relates to the technical field of fuse protection, in particular to a thermal fuse protection device. Background Art

[0002] The fuse is able to allow power-off and power-on operations even under load. The upper moving contact and the lower moving contact at both ends of the fuse tube are tightened by the fuse system. After the upper moving contact is pushed into the protruding part of the duckbill, the upper static contact made of phosphor copper sheet and the like presses against the upper moving contact, so that the tube is firmly stuck in the duckbill. When the short-circuit current passes through and causes the fuse to melt, an arc is generated. The steel paper tube lined inside the tube generates a large amount of gas under the action of the arc, and the arc is extinguished when the current passes through zero. As the fuse melts, under the action of the upper and lower moving contact springs of the fuse tube, the fuse tube falls rapidly, disconnecting the circuit and cutting off the faulty section of the line or the faulty equipment. It is installed on the branch line of the 10kV distribution line, which can reduce the scope of power outage. Because it has an obvious disconnection point and has the function of an isolating switch, it creates a safe working environment for the maintenance section of the line and equipment, and increases the safety sense of maintenance personnel.

[0003] After searching, the Chinese patent number is CN214848476U, which includes a fuse base, a fixed mounting plate, an input terminal, an output terminal, an output connection part, a drop assembly and a connecting turn. The drop assembly includes a fuse tube and an end and an end connected to the fuse tube. The drop assembly cooperates with the connection part through the connecting turn. The drop assembly also includes a protective net for protecting the fuse tube. The fuse tube is placed in the protective net, and the two ends of the protective net are respectively connected to the end and the end. Due to the protective effect of the protective net, when used repeatedly or when impacted, the protective net can protect the fuse tube from damage or breakage. Even if it is damaged or broken, the existence and connection of the protective net can prevent the end from falling and the fuse tube fragments from falling, thereby increasing the service life and the safety factor of the usage scenario. However, there is a problem that no early warning is given when a fuse fails, which will cause damage to the entire fuse, and ultimately lead to an increase in the number of parts that need to be replaced. For this reason, we propose a thermal fuse protection device. Utility Model Content

[0004] The purpose of the utility model is to provide a thermal fuse protection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thermal fuse protection device, comprising a fuse body, an incoming line terminal is connected to the upper end of the fuse body, an outgoing line terminal is connected to the end of the fuse body away from the incoming line terminal, a disengagement mechanism is connected to the end of the incoming line terminal away from the fuse body, an adapter is connected to the end of the outgoing line terminal away from the fuse body, a fuse wire assembly is hinged on the adapter, and the end of the fuse wire assembly away from the adapter abuts against the disengagement mechanism, the disengagement mechanism comprises a contact plate connected to the incoming line terminal, a placement groove is provided on the upper end of the contact plate, a motor is connected to the front end of the contact plate, a follower shaft is connected to the output end of the motor, a contact sleeve is connected to the outer peripheral side of the follower shaft, a main lap joint is connected to the inner wall of the contact sleeve, and a temperature sensor is arranged on the outer side of the contact sleeve.

[0006] Preferably, the fuse assembly comprises a lap joint B hinged on the adapter, the lap joint B is connected to the fuse body, and one end of the fuse body away from the lap joint B is connected to the lap joint A.

[0007] Preferably, a contact ring is connected to the outer peripheral side of the fuse body, and a fixing bracket is connected to the outer peripheral side of the contact ring.

[0008] Preferably, the width of the contact sleeve is smaller than the width of the placement groove.

[0009] Preferably, an L-shaped terminal block A is provided at the upper end of the incoming terminal, and an L-shaped terminal block B is provided at the lower end of the outgoing terminal.

[0010] Preferably, the temperature sensor and the motor are both electrically connected to an external power supply.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: a fuse body, a contact ring, a fixing bracket, an incoming terminal, an L-shaped terminal block A, an outgoing terminal, an L-shaped terminal block B, an adapter, a disengaging mechanism and a fuse assembly are provided to complete the following: when the temperature sensor senses that a large amount of heat is generated by the fuse body, the motor is powered at this time, and the output end of the motor drives the follower shaft to rotate and then drives the contact sleeve to rotate, and the contact sleeve drives the main lap joint to rotate at this time, and the main lap joint and the lap joint B gradually move away from each other, and when the main lap joint and the lap joint B are disconnected, the device is powered off at this time, and the utility model realizes that the overheated fuse can be disconnected in time to prevent excessive losses caused by the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the disengagement mechanism of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the fuse assembly of the utility model.

[0015] In the figure: 1. fuse body; 2. contact ring; 3. fixing bracket; 4. incoming terminal; 5. L-shaped terminal block A; 6. outgoing terminal; 7. L-shaped terminal block B; 8. adapter; 9. disengagement mechanism; 901. contact plate; 902. placement groove; 903. motor; 904. follower shaft; 905. contact sleeve; 906. temperature sensor; 907. main lap joint; 10. fuse assembly; 1001. fuse body; 1002. lap joint A; 1003. lap joint B. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3 The utility model provides a technical solution: a thermal fuse protection device, including a fuse body 1, an incoming terminal 4 is connected to the upper end of the fuse body 1, an outgoing terminal 6 is connected to the end of the fuse body 1 away from the incoming terminal 4, a disengagement mechanism 9 is connected to the end of the incoming terminal 4 away from the fuse body 1, an adapter 8 is connected to the end of the outgoing terminal 6 away from the fuse body 1, a fuse wire assembly 10 is hinged on the adapter 8, and the end of the fuse wire assembly 10 away from the adapter 8 abuts against the disengagement mechanism 9, and the disengagement mechanism 9 includes a contact plate 901 connected to the incoming terminal 4, a placement groove 902 is provided on the upper end of the contact plate 901, a motor 903 is connected to the front end of the contact plate 901, a follower shaft 904 is connected to the output end of the motor 903, a contact sleeve 905 is connected to the outer peripheral side of the follower shaft 904, a main lap joint 907 is connected to the inner wall of the contact sleeve 905, and a temperature sensor 906 is arranged on the outer side of the contact sleeve 905.

[0018] Specifically, the fuse assembly 10 includes a lap joint B1003 hinged on the adapter 8, the lap joint B1003 is connected to the fuse body 1001, and the end of the fuse body 1001 away from the lap joint B1003 is connected to the lap joint A1002; the outer side of the fuse body 1 is connected to the contact ring 2, and the outer side of the contact ring 2 is connected to the fixed bracket 3; the width of the contact sleeve 905 is smaller than the width of the placement groove 902; the upper end of the incoming terminal 4 is provided with an L-shaped terminal block A5, and the lower end of the outgoing terminal 6 is provided with an L-shaped terminal block B7; the temperature sensor 906 and the motor 903 are both electrically connected to an external power supply.

[0019] Working principle: When the temperature sensor 906 senses that the fuse body 1001 generates a large amount of heat, the motor 903 is powered at this time. At this time, the output end of the motor 903 drives the follower shaft 904 to rotate and then drives the contact sleeve 905 to rotate. At this time, the contact sleeve 905 drives the main lap joint 907 to rotate. At this time, the main lap joint 907 and the lap joint B1003 gradually move away from each other. When the main lap joint 907 is disconnected from the lap joint B1003, the device is powered off at this time. The utility model realizes the timely disconnection of the overheated fuse to prevent excessive losses in the device.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal fuse protection device, comprising a fuse body (1), characterized in that: The upper end of the fuse body (1) is connected to an inlet terminal (4); the end of the fuse body (1) away from the inlet terminal (4) is connected to an outlet terminal (6); the end of the inlet terminal (4) away from the fuse body (1) is connected to a disengagement mechanism (9); the end of the outlet terminal (6) away from the fuse body (1) is connected to an adapter (8); the adapter (8) is hinged with a fuse assembly (10); the end of the fuse assembly (10) away from the adapter (8) abuts against the disengagement mechanism (9); the disengagement mechanism (9) is connected to the inlet terminal (4) away from the fuse body (1). The mechanism (9) comprises a contact plate (901) connected to the incoming terminal (4), a placement groove (902) being provided at the upper end of the contact plate (901), a motor (903) being connected to the front end of the contact plate (901), a follower shaft (904) being connected to the output end of the motor (903), a contact sleeve (905) being connected to the outer peripheral side of the follower shaft (904), a main lap joint (907) being connected to the inner wall of the contact sleeve (905), and a temperature sensor (906) being arranged on the outer side of the contact sleeve (905).

2. A thermal fuse protection device according to claim 1, characterized in that: The fuse assembly (10) comprises a lap joint B (1003) hinged on an adapter (8), the lap joint B (1003) being connected to a fuse body (1001), and the end of the fuse body (1001) away from the lap joint B (1003) being connected to a lap joint A (1002).

3. A thermal fuse protection device according to claim 1, characterized in that: The outer peripheral side of the fuse body (1) is connected to a contact ring (2), and the outer peripheral side of the contact ring (2) is connected to a fixing bracket (3).

4. A thermal fuse protection device according to claim 1, characterized in that: The width of the contact sleeve (905) is smaller than the width of the placement groove (902).

5. A thermal fuse protection device according to claim 1, characterized in that: An L-shaped wiring board A (5) is arranged at the upper end of the incoming terminal (4), and an L-shaped wiring board B (7) is arranged at the lower end of the outgoing terminal (6).

6. A thermal fuse protection device according to claim 1, characterized in that: The temperature sensor (906) and the motor (903) are both electrically connected to an external power source.

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